I think we need to look at how we use them, and how the carpet actually dries.
Whenever possible I place a snail blower in a doorway ( the best option is a patio or French doors ) to blow fresh dry air into the room to replace the moisture saturated air that is hovering over the carpet and stopping the evaporation of the wetness in the carpet.
A dry pod doesn't do this, it does circulate the air in the room.... but not replace it